Uniform Invoice lottery

Uniform Invoice
illustrate format of the Uniform Invoice issued in the ROC (not actual invoice)

The Uniform Invoice or Unified Invoice (統一發票 pinyin: Tǒngyī fāpiào), is a type of standardized receipt in Taiwan that is issued by merchants for selling products and services, kept by both seller and consumer, with a 8-digit number for each one, for taxation purposes, managed by the Ministry of Finance of the Republic of China (Taiwan) existing in many form such as hand-written 2-copy, 3-copy, and printed with cashier, and recently electronic Uniform Invoice. Uniform Invoice also features a lottery-like feature drawn every two months.